CN217534746U - Portal ship unloader - Google Patents

Abstract

The utility model relates to the technical field of port equipment, in particular to a portal ship unloader, which comprises an arm support, a portal stand column, a material taking device and an arm support lifting system, wherein the arm support comprises two girders which are arranged in parallel and at intervals and at least one crossbeam, and two ends of the crossbeam are respectively fixedly connected with the two girders; the material taking device is connected to the arm support and is suitable for digging and taking materials; the door seat upright post is positioned between the two main beams; the arm support lifting system comprises a lifting device and a rolling structure, and the lifting device is suitable for drawing the arm support to move along the door seat upright post in a lifting way; one end of the rolling structure is connected to the main beam, and the other end of the rolling structure is in rolling fit with the door seat upright post.

Description

Portal ship unloader

Technical Field

The utility model relates to a harbour site technical field, concretely relates to gate seat formula ship unloaders.

Background

The chain bucket ship unloader has a long application history in a port bulk cargo ship unloading dock, and has a prominent environmental protection advantage. The traditional chain bucket ship unloader generally adopts a portal structure, a chain bucket arm is fixed at the front end of an arm support, and the movement of the chain bucket arm is realized through the rotation of the arm support and the pitching of the arm support. However, when the position of the bucket arm of the conventional bucket ship unloader is adjusted, the swing mechanism, the pitching mechanism and the bucket arm lifting mechanism need to work together to adjust, the adjusting method is complex and tedious, and the ship unloading efficiency of the whole machine is low. Particularly, when the position is adjusted greatly in the ship depth direction, the pitching mechanism and the bucket arm lifting mechanism are required to cooperate together to complete adjustment, and the ship unloading efficiency of the whole ship is seriously influenced.

Some existing portal ship unloaders comprise an arm support mechanism and a guide cylinder, wherein the arm support mechanism is provided with a lifting mechanism which controls the arm support mechanism to slide up and down along the guide cylinder. The boom mechanism and the guide cylinder rub against each other in the process of sliding up and down, so that the boom mechanism or the guide cylinder is easily damaged, and noise is also generated.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the gliding in-process from top to bottom of the cantilever crane mechanism among the prior art and the defect that the guide cylinder looks mutual friction has damaged to a portal formula ship unloader who avoids the friction damage is provided.

In order to solve the problems, the utility model provides a gate seat type ship unloader, which comprises an arm support, a gate seat upright post, a material taking device and an arm support lifting system, wherein the arm support comprises two main beams which are parallel and arranged at intervals and at least one cross beam, and two ends of the cross beam are respectively fixedly connected with the two main beams; the material taking device is connected to the arm support and is suitable for digging and taking materials; the door seat upright post is positioned between the two main beams; the arm support lifting system comprises a lifting device and a rolling structure, and the lifting device is suitable for drawing the arm support to move along the door seat upright post in a lifting way; one end of the rolling structure is connected to the main beam, and the other end of the rolling structure is in rolling fit with the door seat upright post.

The utility model provides a gate seat formula ship unloader, the roll structure includes the gyro wheel, the gyro wheel with the girder is connected, and with gate seat stand roll cooperation.

The utility model provides a gate seat formula ship unloaders, the roll structure still includes the elastic damping spare, the gyro wheel passes through the elastic damping spare with the girder is connected.

The utility model provides a gate seat formula ship unloaders, at least one be equipped with two interval distribution's connecting seat on the girder, the gate seat stand is located two between the connecting seat, the girder and/or be connected with at least one on the connecting seat the roll structure.

The utility model provides a gate seat formula ship unloaders, be equipped with on the gate seat stand with gyro wheel complex guide rail, the gyro wheel is suitable for the edge the guide rail goes up and down.

The utility model provides a gate seat formula ship unloaders, every all install at least one locking structure on the connecting seat, locking structure is used for following the relative both sides locking of gate seat stand the gate seat stand.

The utility model provides a portal ship unloader, the lifting device comprises a traction mechanism, a pulley component and a transmission part; the traction mechanism is arranged on the arm support and is suitable for being respectively connected with the door seat upright post and the arm support through the transmission piece and the pulley assembly.

The utility model provides a gate seat formula ship unloaders, loose pulley assembly includes:

at least one pair of first pulleys, wherein each pair of first pulleys is respectively arranged at two sides of the top of the door seat upright post;

at least one pair of second pulleys, wherein each pair of second pulleys is arranged on the two main beams respectively and is correspondingly arranged below the first pulleys in the lifting direction of the arm support;

the at least one pair of third pulleys are arranged at two ends of the side part of the door seat upright post and are positioned at corresponding positions below the first pulleys in the lifting direction of the arm support;

one end of the transmission part is connected with the output end of the traction mechanism, and the other end of the transmission part sequentially bypasses one side of the door seat stand column, the first pulley is arranged on one side of the door seat stand column, the first pulley corresponds to one side of the door seat stand column, the second pulley is arranged on one side of the door seat stand column, the third pulley corresponds to the other side of the door seat stand column, the second pulley is arranged on the other side of the door seat stand column, and the second pulley is arranged behind the first pulley and is connected with the input end of the traction mechanism.

The utility model provides a gate seat formula ship unloader, the first pulley has three pairs, the top that the gate seat stand is close to one side of the drive mechanism is equipped with two pairs of the first pulley, the top that the gate seat stand is far away from one side of the drive mechanism is equipped with a pair of the first pulley;

the second pulleys are provided with two pairs and distributed along the length direction of the main beam;

the third pulleys are provided with a pair and are arranged on the side part of the door seat upright post far away from the traction mechanism;

the one end of driving medium with drive mechanism's output is connected, and the other end is walked around in proper order and is located one side of door seat stand and be close to drive mechanism one first pulley, correspond the second pulley, be located one side of door seat stand and be close to drive mechanism another first pulley, be located one side of door seat stand and keep away from drive mechanism first pulley, correspond second pulley, two the third pulley, be located the opposite side of door seat stand and keep away from drive mechanism the first pulley corresponds the second pulley, be located the opposite side of door seat stand and keep away from drive mechanism first pulley, be located the opposite side of door seat stand and be close to drive mechanism one first pulley, correspond the second pulley, be located the opposite side of door seat stand and be close to drive mechanism another behind the first pulley with drive mechanism's input is connected.

The utility model provides a gate seat formula ship unloaders, the third pulley is close to the top setting of gate seat stand.

The utility model has the advantages of it is following:

1. through the arm support lifting system, the integral lifting of the arm support is realized, the heights of the arm support and the material taking device can be conveniently adjusted in a large range, the material taking device is convenient to take materials, the integral loading and unloading efficiency is greatly improved, and meanwhile, the safety of the ship unloader in extreme weather is effectively improved. The main beam of the arm support is in rolling fit with the door seat upright post through a rolling structure, so that friction between the door seat upright post and the main beam is reduced, noise is reduced, the lifting direction of the arm support can be guided along the direction of the door seat upright post, in addition, the lifting displacement between the door seat upright post and the arm support is limited from the periphery of the door seat upright post, and the deviation or dislocation of the connecting position between the door seat upright post and the arm support is prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Figure 1 shows a schematic view of a gate-seat ship unloader;

fig. 2 shows a partial schematic view of a boom hoist system;

FIG. 3 shows an enlarged view of section B of FIG. 2;

FIG. 4 shows a bottom view of FIG. 2;

fig. 5 shows a schematic of the connection of the sheave assembly to the traction mechanism;

fig. 6 is a schematic view of the material taking device of the present invention;

FIG. 7 is a first enlarged view of a portion of FIG. 6;

FIG. 8 is a second enlarged view of the portion of FIG. 6;

fig. 9 is a schematic view of the matching state of the swing mechanism and the material taking device of the present invention;

fig. 10 is a schematic view of a plurality of swing positions of the material taking device according to the present invention;

FIG. 11 is a schematic view of a portion of a bucket chain according to the present invention;

fig. 12 is a schematic view of a hopper according to the present invention;

FIG. 13 is a schematic view of the lifting float device shown in FIG. 1 from a downward viewing angle A;

fig. 14 is a schematic diagram of the clutch closing state of the trolley propulsion system of the present invention.

Description of reference numerals:

11. a door seat post; 1101. a guide rail; 13. running the trolley; 20. a cabin; 30. material preparation; 40. a wharf foundation;

100. a material taking device; 101. a drive motor; 102. a drive sprocket; 103. a rotating shaft; 104. a chain bucket arm; 1051. a first direction changing sprocket; 1052. a second direction-changing sprocket; 106. tensioning the push rod; 107. a housing; 108. a tension sprocket; 110. a hopper chain; 111. a hopper; 112. a connecting plate; 113. a hopper back plate; 114. an ear plate;

120. a material lifting section; 130. a first descending section; 140. a second descending section; 150. a material taking section; 160. a discharging section;

200. a rocking mechanism; 201. the swing mechanism tensions the oil cylinder; 202. a swinging mechanism traction rope; 203. a redirection pulley of the swing mechanism; 204. a damping oil cylinder of the swing mechanism; 205. a damping pulley; 206. a traction hinge point;

210. a first swing state; 220. a second swing state; 230. a third swing state;

300. a lifting floating device; 301. connecting the cross beam; 302. a hinge point; 303. a fixed mount; 304. a middle support; 305. a movable frame; 306. connecting ropes; 307. a jacking oil cylinder; 308. a fourth pulley; 309. a damping oil cylinder; 310. a fifth pulley; 311. a sixth pulley;

401. a flexible track; 402. a drive wheel; 403. a trolley body; 404. a drive unit; 405. a clutch; 406. a connecting plate; 407. connecting a hinge point of the plate; 408. tensioning the oil cylinder; 409. a pinch roller; 410. trolley wheels; 411. and (4) hinging the oil cylinder.

600. A boom hoist system; 601. a boom; 6011. a main beam; 6012. a cross beam; 602. a traction mechanism; 603. a sheave assembly; 6031. a first pulley; 6032. a second pulley; 6033. a third pulley; 604. a transmission member; 605. a rolling structure; 6051. a roller; 6052. an elastic damping member; 606. and (5) a locking structure.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 14, the embodiment provides a portal ship unloader, which includes an arm support 601, a portal upright 11, a material taking device 100, and an arm support lifting system 600, where the arm support 601 includes two main beams 6011 and at least one cross beam 6012 that are parallel and spaced, and two ends of the cross beam 6012 are respectively fixedly connected to the two main beams 6011; the material taking device 100 is connected to the arm frame 601 and is suitable for digging and taking the materials 30; the door seat upright post 11 is positioned between the two main beams 6011; boom hoist system 600 comprises a hoist and rolling structure 605 adapted to draw boom 601 up and down along door base column 11; one end of the rolling structure 605 is connected to the main beam 6011, and the other end is in rolling fit with the door seat upright post 11.

Through the arm support lifting system 600, the integral lifting of the arm support 601 is realized, the heights of the arm support 601 and the material taking device 100 can be conveniently adjusted in a large range, the material taking device 100 can take materials conveniently, the integral loading and unloading efficiency is greatly improved, and meanwhile, the safety of the ship unloader in extreme weather is effectively improved. The girder 6011 of the arm support 601 is in rolling fit with the door seat upright post 11 through the rolling structure 605, so that friction between the door seat upright post 11 and the girder 6011 is reduced, noise is reduced, the lifting direction of the arm support 601 can be guided along the direction of the door seat upright post 11, in addition, the lifting displacement between the door seat upright post 11 and the arm support 601 is limited from the periphery of the door seat upright post 11, and the deviation or dislocation of the connection position between the door seat upright post 11 and the arm support 601 is prevented. If two main beams 6011 are inclined to one main beam 6011 when being lifted or lowered, the other main beam 6011 is clamped with the door seat upright post 11 through the rolling structure 605, so that the two main beams 6011 are not inclined greatly, the levelness of the arm support 601 when being lifted or lowered is ensured, and the safety of the arm support lifting system 600 is improved.

In this embodiment, the rolling structure 605 includes a roller 6051, and the roller 6051 is connected to the main beam 6011 and is in rolling fit with the door seat pillar 11. In a specific embodiment, the rolling structure 605 further includes a rolling frame, the rolling frame is disposed on the main beam 6011, and the roller 6051 is connected to the rolling frame.

In this embodiment, the rolling structure 605 further includes an elastic damping member 6052, and the roller 6051 is connected to the main beam 6011 through the elastic damping member 6052. The elastic damping part 6052 can reduce the influence of the vibration of the roller 6051 during rolling on the arm support 601.

In an implementation manner of this embodiment, two connection seats are disposed on each of the two main beams 6011 at intervals, the door seat pillar 11 is located between the two connection seats of each main beam 6011, and the main beams 6011 and the connection seats are both connected to at least one rolling structure 605. The connecting seat carries out spacing and direction to door seat stand 11. Four side surfaces of the door seat upright post 11 are matched with the arm support 601 in a rolling way through rolling structures 605.

In another embodiment of this embodiment, two connection seats distributed at intervals are respectively disposed on two of the main beams 6011, the door seat upright 11 is located between the two connection seats of each main beam 6011, and each main beam 6011 is connected to at least one rolling structure 605. Or, each of the connecting seats is provided with at least one rolling structure 605. Two opposite sides of the door seat upright post 11 can be in rolling fit with the arm support 601.

In another embodiment of this embodiment, only one main beam 6011 is provided with two connecting seats distributed at intervals, the door seat upright 11 is located between the two connecting seats, and the main beam 6011 and the connecting seats are both connected with at least one rolling structure 605. Or, only two main beams 6011 are each connected with at least one rolling structure 605; alternatively, only two connection sockets are each connected with at least one rolling structure 605.

In this embodiment, the door seat pillar 11 is provided with a guide rail 1101 engaged with the roller 6051, and the roller 6051 is adapted to ascend and descend along the guide rail 1101. The guide rail 1101 is used for guiding the roller 6051, and prevents the roller 6051 from derailing to influence the lifting of the arm support 601. Specifically, the guide rail 1101 includes a guide bar and a guide groove provided on the guide bar, and the guide wheel is adapted to move along the guide groove. Alternatively, the guide rail 1101 includes two parallel guide bars arranged at intervals, a guide groove is formed between the two guide bars, and the guide wheel is adapted to move along the guide groove.

In this embodiment, each of the connection seats is provided with at least one locking structure 606, and the locking structures 606 are used for locking the door seat post 11 from two opposite sides of the door seat post 11, so as to lock the arm frame 601 at a corresponding height. In one embodiment, locking structure 606 may be a hydraulic ram. In another preferred embodiment, the locking structure 606 may also be a rail clamp. In this embodiment, the lifting device includes a traction mechanism 602, a pulley assembly 603, and a transmission member 604; the traction mechanism 602 is disposed on the arm support 601 and is adapted to be connected to the door seat pillar 11 and the arm support 601 through the transmission member 604 and the pulley assembly 603, respectively. Simple structure, easy control, transmission member 604 is the wire rope preferably.

In this embodiment, the pulley assembly 603 includes at least one pair of first pulleys 6031, at least one pair of second pulleys 6032, and at least one pair of third pulleys 6033, where each pair of first pulleys 6031 is disposed on two sides of the top of the door seat pillar 11; each pair of the second pulleys 6032 is respectively arranged on the two main beams 6011 and correspondingly arranged below the first pulleys 6031 in the lifting direction of the arm support 601; at least one pair of third pulleys 6033 are disposed at two ends of a lateral portion of the door seat pillar 11 and located at corresponding positions below the first pulleys 6031 in a lifting direction of the arm frame 601. The one end of driving medium 604 with the output of drive mechanism 602 is connected, and the other end is walked around in proper order one side of door seat stand 11 first pulley 6031, correspond one side of door seat stand 11 second pulley 6032, two third pulley 6033, correspond the opposite side of door seat stand 11 second pulley 6032 the opposite side of door seat stand 11 behind first pulley 6031 with the input of drive mechanism 602 is connected.

The lifting of the arm support 601 can be controlled through the transmission piece 604, and the structure is simple. The first pulley 6031 is arranged at the top to generate a height difference, so that the lifting of the arm support 601 is controlled conveniently. The second pulley 6032 is a movable pulley, which reduces the pressure borne by the transmission part 604, so that the arm support 601 can be lifted more conveniently. In a specific embodiment, the main beam 6011 has a protruding pillar extending upward, and the second pulley 6032 is disposed on the protruding pillar, so as to reduce the length of the transmission member 604. The third pulley 6033 is arranged, so that the pulley assembly 603 can be connected with the output end and the input end of the traction mechanism 602 only through one transmission piece 604, the stress of each transmission piece 604 is dispersed, and the transmission piece 604 is prevented from being damaged due to overlarge stress.

In this embodiment, in a specific implementation manner, the first pulleys 6031 have three pairs, two pairs of the first pulleys 6031 are disposed on the top of the door seat upright 11 on the side close to the traction mechanism 602, and a pair of the first pulleys 6031 are disposed on the top of the door seat upright 11 on the side far from the traction mechanism 602; the second pulley 6032 has two pairs distributed along the length direction of the main beam 6011; the third pulley 6033 has a pair of side parts disposed on the door seat post 11 far from the traction mechanism 602; the one end of driving medium 604 with the output of drive mechanism 602 is connected, and the other end is walked around in proper order and is located one side of door seat stand 11 and be close to one of drive mechanism 602 first pulley 6031, correspond second pulley 6032, be located one side of door seat stand 11 and be close to another of drive mechanism 602 first pulley 6031, be located one side of door seat stand 11 and keep away from drive mechanism 602 first pulley 6031, correspond second pulley 6032, two third pulley 6033, be located opposite side of door seat stand 11 and keep away from drive mechanism 602 first pulley 6031 corresponds second pulley 6032, be located opposite side of door seat stand 11 and keep away from drive mechanism 602 first pulley 6031, be located opposite side of door seat stand 11 and be close to one of drive mechanism 602 first pulley 6031, correspond second 6032, be located opposite side of seat stand 11 and be close to another of drive mechanism 602 another back pulley 6031 with the input of drive mechanism 602.

In this embodiment, the third pulley 6033 is disposed near the top of the door seat post 11. Interference with the boom 601 when the boom 601 is raised is avoided, and the raising height of the boom 601 is not influenced.

In this embodiment, before the arm support 601 is lifted, the locking structure 606 is released, the transmission member 604 is driven by the traction mechanism 602 to pull the arm support 601, the roller 6051 rolls on the surface of the door seat upright post 11, the elastic damping member 6052 can reduce the influence of the vibration in the rolling process on the arm support 601, when the arm support 601 is lifted or lowered to a proper height by being pulled in place, the locking structure 606 clamps the door seat upright post 11 from both sides to fix the height position of the arm support 601, and the lifting process is finished.

The ship unloader with the arm support lifting system 600 of the embodiment further comprises a swinging material taking assembly, wherein the swinging material taking assembly comprises a material taking device 100, a rotating shaft 103 and a swinging mechanism 200, and the material taking device 100 is suitable for digging and taking materials 30; the rotating shaft 103 is hinged with the material taking device 100, and the material taking device 100 is suitable for swinging around the rotating shaft 103; the swing mechanism 200 is flexibly connected with a traction hinge point 206 of the material taking device 100; the swinging mechanism 200 is adapted to pull the material taking device 100, so that the material taking device 100 is maintained at a first preset position when no external force is applied; and when the material taking device is at the first preset position, the vertical line penetrating through the gravity center of the material taking device 100 and the axis of the rotating shaft 103 are arranged at intervals, and the moment of the material taking device under the action of gravity enables the material taking device to have the tendency of moving towards the land side direction.

Preferably, the material taking device 100 comprises a hopper chain 110 which is sequentially connected end to end by a plurality of hoppers 111, and the hopper chain 110 reciprocates back and forth so as to dig the material 30 by the hopper 111, and the specific structural form of the material taking device is described in detail below.

Specifically, the swing mechanism 200 comprises a swing mechanism tensioning cylinder 201 and a swing mechanism traction rope 202; one end of a traction rope 202 of the rocking mechanism is connected with the traction hinge point 206, and the other end of the traction rope is connected with a tensioning oil cylinder 201 of the rocking mechanism; the swing mechanism tensioning cylinder 201 is adapted to facilitate movement of the take off device 100 in the landside direction when extended and to drive the take off device 100 in the seaside direction when retracted.

One end of the steel wire rope is connected with a tensioning oil cylinder 201 of the swing mechanism, and the other end of the steel wire rope is connected with a traction hinge point 206 at the lower part of the material taking device 100 after bypassing a fixed pulley block connected at the tail end of the damping oil cylinder. The steel wire rope is driven to move by stretching of the tensioning oil cylinder, and then the material taking device 100 can be pulled to swing.

Preferably, the swing mechanism tensioning cylinder 201 is adapted to actively adjust the angle of the material extracting apparatus 100 as needed. Preferably, when the material taking device 100 is subjected to an external force, the swinging mechanism tensioning cylinder 201 does not follow the external force to extend or contract.

Preferably, the swinging material taking assembly of the embodiment is preferably applied to a ship unloader, the ship unloader extends out of the arm support 601, and the material taking device 100 is mounted on the arm support 601. Specifically, the material taking device 100 is hinged to the arm support 601 through a rotating shaft 103, so that the material taking device 100 can swing around the rotating shaft 103 relative to the arm support 601. The upper part of the material taking device 100 is hinged with a rotating shaft 103, so that the material taking device 100 is suitable for swinging around the rotating shaft 103. A traction hinge point 206 is arranged at the middle part or the middle lower part of the material taking device 100, the swing mechanism 200 is flexibly connected with the traction hinge point 206, and particularly, the traction rope 202 of the swing mechanism is connected with the traction hinge point 206, so that the material taking device 100 is maintained at a first preset position when no external force is applied; when the material taking device is at the first preset position, a vertical line passing through the gravity center of the material taking device 100 and the axis of the rotating shaft 103 are arranged at intervals, and the moment of the material taking device under the action of gravity enables the material taking device to have the tendency of moving towards the land side direction. The take-off device has a tendency to move around the axis of rotation 103 and in a land-side direction under its own weight.

It should be noted that the vertical line passing through the center of gravity of the material taking device is arranged at intervals with the axis of the rotating shaft 103, which means that the vertical line passing through the center of gravity of the material taking device does not pass through the axis of the rotating shaft 103, that is, the axis of the rotating shaft 103 and the center of gravity of the material taking device are not on the same straight line in the vertical direction.

The rocking mechanism 200 provides traction to the extracting apparatus 100 to maintain the extracting apparatus 100 in a first predetermined position when not subjected to external forces, in which position there is always a moment in the direction of the land side, which is balanced by the pulling force of the rocking mechanism 200. When the material taking device 100 moves from the sea side to the land side for operation, the material taking device 100 can be always pushed to the front end of the moving direction by the gravity of the material taking device 100 weighing tens of tons, so that the front excavation of the material by the hopper is facilitated, and the problem that the material taking device can overcome a certain resistance can be solved even if the material taking device meets a certain resistance. When the material taking device 100 moves from the land side to the sea side for operation, the attitude of the material taking device 100 is always kept stable by the tension of the traction steel wire rope.

When the cabin suddenly encounters a surge condition, in the width direction of the ship, if the force applied by the surge to the ship and the material taking device 100 is towards the sea side direction, the material taking device 100 tends to swing clockwise, at the moment, the force of the surge is applied to the material taking device 100, only the pulling force of the steel wire rope can be reduced, if the moment of the surge force to the rotating shaft 103 exceeds the moment of the gravity to the rotating shaft 103, the material taking device 100 slightly swings clockwise, the force of the surge swings, and the force is prevented from being transmitted to the structure of the ship unloader. If the force applied by the surge to the ship and the material taking device 100 is towards the land side direction, the material taking device 100 is subjected to material taking resistance, gravity and steel wire rope tension, and suddenly receives the force of the surge, so that the tension of the steel wire rope can be rapidly increased, the force applied to the pulley at the tail end of the damping oil cylinder can be rapidly increased, when the value exceeds a threshold value, the damping oil cylinder is released, the length of the steel wire rope is increased, and the material taking device 100 swings anticlockwise to achieve a new balance state. The force applied to the material taking device 100 during surging is converted into swinging of the material taking device 100, and the swinging force cannot be applied to the structure of the chain bucket ship unloader, so that the safety of the structure under surging is guaranteed.

In the swing material taking assembly provided by this embodiment, the material taking device 100 is pulled by the swing mechanism 200, so that the material taking device 100 is maintained at a first preset position when no external force is applied; when the material taking device is at the first preset position, the vertical line penetrating through the gravity center of the material taking device 100 is arranged at intervals with the axis of the rotating shaft 103, and the torque of the material taking device under the action of gravity enables the material taking device to have the tendency of moving towards the land side direction; therefore, the material taking device can assist in taking materials by utilizing the torque generated by the gravity of the material taking device, meanwhile, the materials moving along with the ship under the action of surge are prevented from impacting the material taking arm, the impact force is prevented from being transmitted to the structure of the ship unloader, and the safety and the reliability of the structure are ensured.

Specifically, the swing mechanism 200 further comprises a swing mechanism redirection pulley 203 which is arranged between the swing mechanism tensioning oil cylinder 201 and the traction hinge point 206 and is in sliding contact with the swing mechanism traction rope 202.

Specifically, the swing mechanism 200 further comprises a swing mechanism damping oil cylinder 204 and a damping pulley 205; the damping pulley 205 is connected with the free end of the damping oil cylinder 204 of the swing mechanism and is in sliding contact with the traction rope 202 of the swing mechanism; the damping pulley 205 is arranged between the swing mechanism redirection pulley 203 and the traction hinge point 206;

the swing mechanism damping cylinder 204 is adapted to extend when the reclaimer device 100 is subjected to a moment in the landside direction greater than a predetermined threshold and to retract when the reclaimer device 100 is subjected to a moment in the seaside direction.

Preferably, the damping cylinder 204 of the swing mechanism can follow the elongation according to the condition that the material taking device 100 bears external force, so as to adjust the angle of the material taking device 100. If the material taking device 100 is subjected to moment towards the land side direction, the material taking device 100 pulls the swinging mechanism traction rope 202, and if the force of the swinging mechanism traction rope 202 is larger than the preset threshold value of the swinging mechanism damping oil cylinder 204, the swinging mechanism damping oil cylinder 204 extends; if the reclaimer device 100 is subjected to a moment in the seaside direction, the reclaimer device 100 reduces the force on the swing mechanism pull rope 202, thereby causing the damping cylinder to retract.

When a surge occurs, the damping oil cylinder 204 of the swing mechanism extends or contracts according to the stress direction, when the surge is finished, the stress of the traction rope 202 of the swing mechanism is recovered to the state before the surge, the extension amount of the damping oil cylinder 204 of the swing mechanism is recovered to the state before the surge, and meanwhile, the angle of the material taking device 100 is also recovered to the state before the surge. According to the swing material taking assembly provided by the embodiment, the damping oil cylinder 204 of the swing mechanism is arranged, so that the material taking device 100 extends when receiving a moment towards the land side direction, and the material taking device 100 contracts when receiving a moment towards the sea side direction; therefore, the length of the traction rope 202 of the swing mechanism can be automatically adjusted according to the stress condition of the taking device 100, the taking device 100 can conveniently reach a new balance state after being stressed, the force applied to the taking device 100 during surging is guaranteed to be converted into the swing action of the taking device 100, the swing action cannot be applied to the structure of the bucket chain ship unloader, and the safety of the structure under surging is guaranteed.

Specifically, the swing mechanism tensioning cylinder 201 is adapted to extend and retract in the horizontal direction.

Specifically, the rocking mechanism damping cylinder 204 is adapted to extend and retract in a horizontal direction.

Optionally, the stroke of the tensioning oil cylinder of the swing mechanism is greater than the stroke of the damping oil cylinder of the swing mechanism.

Preferably, the stress threshold of the rocking mechanism tensioning cylinder 201 is greater than the stress threshold of the rocking mechanism damping cylinder 204, so that the reaction of the rocking mechanism tensioning cylinder 201 is slower than that of the rocking mechanism damping cylinder 204 when the rocking mechanism tensioning cylinder is stressed.

The stroke of the tensioning oil cylinder 201 of the swing mechanism is large, and the reaction is slow; the stroke of the damping oil cylinder 204 of the swing mechanism is small, and the reaction is fast.

Specifically, the tensioning oil cylinder 201 of the swing mechanism is contracted to increase the included angle between the axis of the material taking device 100 along the length direction and the vertical direction;

the swing mechanism tensioning cylinder 201 extends to reduce the included angle between the axis of the material taking device 100 along the length direction and the vertical direction.

Because the hatch department of cabin is provided with the bounding wall, is located the difficult material of bounding wall below and takes out when extracting device 100's normal operating position, consequently, the material subassembly can also drive extracting device 100 as required and carry out angle adjustment in the swing that this embodiment provided.

Under the normal working condition, the material taking device 100 is in the angular position of the first swing state 210, when the material taking device needs to be adjusted from the first swing state 210 to the second swing state 220, the swing mechanism tensioning cylinder 201 extends out, and the material taking device 100 can be adjusted to the second swing state 220 under the action of gravity moment. When the first swing state 210 needs to be adjusted to the third swing state 230, the tensioning cylinder 201 of the swing mechanism retracts, and the wire rope traction material taking device 100 is adjusted to the third swing state 230. By adjusting different postures, the corner materials of the cabin can be emptied conveniently, and the cabin cleaning amount is reduced.

The material subassembly is got in swaying that this embodiment provided can drive extracting device and make the swing of small amplitude around gyration pivot 103 through the flexible of wabbler mechanism tensioning cylinder 201, and then changes extracting device 100 along the axis of its length direction and the contained angle of vertical direction, adjusts extracting device's gesture, makes extracting device sway certain angle, conveniently gets into the under-deck corner and excavates the material. The cabin cleaning amount is reduced, and the actual use efficiency is improved.

The ship unloader with the boom lifting system 600 of the embodiment comprises a boom 601, a running trolley 13 and the swinging material taking assembly, wherein the running trolley 13 is arranged on the boom 601 and is suitable for moving along the length direction of the boom 601; the swinging material taking assembly is installed on the running trolley 13, and the running direction of the running trolley 13 is parallel to the rotation plane of the material taking device 100.

Specifically, the rocking mechanism tensioning cylinder 201 and the rocking mechanism damping cylinder 204 are both fixed on the running trolley 13; the rotating shaft 103 is fixedly arranged on the running trolley 13.

Specifically, the material taking device 100 is provided with a hopper chain 110 formed by sequentially connecting a plurality of hoppers 111 end to end, the stress direction of the hopper chain 110 when the material 30 is dug is parallel to the rotation plane of the material taking device 100, and the opening direction of the hopper chain 110 when the material 30 is dug faces the sea side.

Preferably, the ship unloader is arranged on the wharf foundation 40 and extends to the sea side through the arm support 601. Preferably, the material extracting apparatus 100 is adapted to extend into the hold 20 to facilitate scooping of the material 30.

Preferably, the material taking device only takes materials from the front side in the ship width direction in one-time movement, and main loads received by the material taking device are all in the plane where the material taking device is located, so that the service life of equipment is prolonged, and the efficiency is improved.

Although the L-shaped chain bucket type ship unloader in the prior art solves the environmental protection problems of material leakage and the like, the L-shaped chain bucket type material taking head adopts a horizontal rotation feeding mode, so that the lower end of a vertical arm of a chain bucket is easy to bear large horizontal force, and the excessive torsion of the material taking arm is easy to occur, thereby causing the faults of a material taking arm rotating mechanism and an arm support rotating mechanism. And the crowded feeding mode of gyration heap, the feeding width is decided by chain bucket pitch, chain speed and three parameter of chain bucket velocity of motion jointly, but these several parameters also restrict each other, and speed too fast can influence the feeding width, and speed too slow then can influence the efficiency of whole promotion, so the gyration is got the mode of material and has restricted the further improvement of efficiency.

In order to solve the problems that the ship unloader is unreasonably stressed and easily damaged and the ship unloader is low in unloading efficiency, the material taking device provided by the embodiment comprises a chain bucket arm 104, a bucket chain 110, a driving unit and a rotating shaft 103; the hopper chain 110 is formed by sequentially connecting a plurality of hoppers 111 end to end, and the hopper chain 110 is arranged around the outer periphery of the hopper arm 104; the drive unit is adapted to drive the hopper chain 110 in motion relative to the hopper arm 104; the revolving shaft 103 is hinged with the chain bucket arm 104, and the chain bucket arm 104 is suitable for swinging around the revolving shaft 103; the direction of the force applied by the hopper chain 110 when digging material 30 is parallel to the plane of rotation of the hopper arm 104.

Preferably, the bucket arm 104 is used as a main structure of the material taking device for supporting other structural components, and in this embodiment, the bucket arm 104 may be a metal frame extending along the length direction.

Preferably, the direction of the force applied to the hopper chain 110 when digging the material 30 is the extending direction of the material taking section 150.

The hopper chain 110 is formed by sequentially connecting a plurality of hoppers 111 end to end, and the hopper chain 110 is configured in an annular shape and is suitable for being driven by a driving unit to operate relative to the hopper arm 104. The hopper chain 110 is provided with a plurality of hoppers 111, so that the hoppers 111 are used for scooping the materials in the process of cyclic reciprocating motion, the materials 30 are dumped after the materials are lifted to a certain height, and then the scooping of the materials is continued, and the process is repeated. In this embodiment, the material 30 may be coal, corn, wheat, or other grains, or other substances that can be accommodated in the hopper 111.

Preferably, the material taking device of this embodiment is preferably applied to a ship unloader, the ship unloader extends out of the arm support 601, and the chain bucket arm 104 is mounted on the arm support 601. Specifically, the chain arm 104 is hinged to the arm support 601 through a rotating shaft 103, so that the chain arm 104 can swing relative to the arm support 601 around the rotating shaft 103. Furthermore, the stress direction of the hopper chain 110 during the process of digging the materials 30 is parallel to the rotation plane of the hopper arm 104, so that when the material taking device works, the hopper arm 104 does not bear extra acting force, and when the torsional force of the hopper chain 110 during the process of digging the materials 30 is too large, the hopper arm 104 can freely swing around the rotation shaft 103 under the action of force, the main load borne by the material taking device is within the plane of the material taking device, the problem that the hopper arm 104 breaks down due to too large stress is avoided, and the service life of the equipment is prolonged, and the efficiency is improved.

In the material taking device provided by the embodiment, the rotating shaft 103 is arranged, so that the chain bucket arm 104 is suitable for swinging around the rotating shaft 103; and the stress direction of the hopper chain 110 when the material 30 is dug is parallel to the rotation plane of the hopper arm 104, so that the main load borne by the material taking device is ensured to be within the plane of the material taking device, the stress is more reasonable, the operation reliability is improved, the failure caused by the overlarge stress of the hopper arm 104 is avoided, and the service life of the equipment is prolonged, and the efficiency is improved.

Further, the opening direction of the hopper 111 is parallel to the rotation plane of the hopper chain 110, the opening direction of the hopper 111 is parallel to the rotation plane of the bucket arm 104, and further, the opening direction of the hopper 111 is parallel to the translation direction of the material taking device along the arm support 601, namely, a front feeding mode is adopted, so that the hopper 111 can shovel materials into the hopper more directly when digging the materials, and the operation efficiency is greatly improved. The mode of front feeding is adopted, so that the material can be prevented from being piled and extruded at the head part of the material taking head, and the larger lateral excavation resistance is avoided.

Specifically, the revolving shaft 103 is hinged to an upper portion of the chain bucket arm 104;

the vertical line passing through the gravity center of the material taking device is arranged at intervals with the axis of the rotating shaft 103.

It should be noted that the vertical line passing through the center of gravity of the material taking device is arranged at intervals with the axis of the rotating shaft 103, which means that the vertical line passing through the center of gravity of the material taking device does not pass through the axis of the rotating shaft 103, that is, the axis of the rotating shaft 103 and the center of gravity of the material taking device are not on the same line in the vertical direction. In order to maintain the state, the embodiment is flexibly connected with a traction hinge point 206 of the material taking device 100 by arranging the swing mechanism 200; the swinging mechanism 200 is adapted to pull the material taking device 100, so that the material taking device 100 is maintained at a first preset position when no external force is applied; when the material taking device is at the first preset position, a vertical line passing through the gravity center of the material taking device 100 and the axis of the rotating shaft 103 are arranged at intervals, and the moment of the material taking device under the action of gravity enables the material taking device to have the tendency of moving towards the land side direction.

The extracting device that this embodiment provided, through making pass extracting device's centrobaric perpendicular line with the axle center looks interval of revolving axle 103 sets up to make extracting device have all the time to getting the trend and the moment of material front end motion, thereby increase extracting device to the pressure of material, extracting device can utilize the moment that self gravity produced, remains the motion trend to hopper head direction all the time, conveniently gets the material, and reduces the energy consumption.

The material taking device is roughly in a herringbone structure, and when the material taking device is at an initial position, the gravity center and the hinge point of the material taking device are not on the same straight line, and moment exists; when the excavation operation, extracting device can utilize the moment that self gravity produced, remains the motion trend to hopper head direction throughout, if having touch the resistance, if the material that hardens, the hopper can rely on the gravity of self to withstand the material department that hardens with the head throughout, improves the power of breaking and removing to the material that hardens, waits for the hopper to excavate and continues to advance again after the place ahead material to improve and get material efficiency, reduce extra effort, need not extra effort extracting device even and can utilize self gravity to accomplish and get the material, reduce the energy consumption.

Specifically, the driving unit includes a driving motor 101 and a driving sprocket 102; the outer circumference of the driving sprocket 102 is attached to the hopper chain 110, and the driving motor 101 is adapted to drive the hopper chain 110 to rotate via the driving sprocket 102.

Preferably, the output shaft at the end of the drive motor 101 is connected to a drive sprocket 102 after being decelerated, and the drive sprocket 102 is located at the upper part of the material taking device.

Specifically, the rotation axis of the driving sprocket 102 coincides with the axis of the revolving shaft 103.

Specifically, the extracting device still includes: two tension sprockets 108 disposed at one end of the bucket arm 104 remote from the drive sprocket 102 in a longitudinal direction thereof;

the two tensioning sprockets 108 are adapted to extend the hopper chain 110 and form at least a portion of the hopper chain 110 into a take-off section 150 adapted to contact the material 30.

The two tension sprockets 108 are located at the lower portion of the material taking device, and the two tension sprockets 108 can stretch the lower portion of the hopper chain 110, so that when a plurality of hoppers run to the position, the hoppers can be in a state that openings of the hoppers are forward, material taking of the plurality of hoppers is facilitated, and material taking efficiency is improved.

Specifically, the extracting device still includes: a tension push rod 106 is disposed between the two tension sprockets 108 and adapted to maintain the two tension sprockets 108 in a relatively spaced apart condition to tension the hopper chain 110. Thereby ensuring tensioning of the hopper chain 110 and maintaining the length of the take-off section 150.

Specifically, a lifting section 120 adapted to lift the material 30 is formed between the end of the material taking section 150 and the driving sprocket 102.

The end of the material taking section 150 refers to an end of the hopper chain 110, which is in contact with the material 30, in the rotation direction of the hopper chain 110. Correspondingly, the head end of the material taking section 150 refers to the head end of the hopper chain 110, which is in contact with the material 30, along the rotation direction of the hopper chain 110.

Preferably, the material lifting section 120 is a straight line section in this embodiment. Through setting up material lifting section 120 to the straightway to make the hopper remain on a straight line all the time, guarantee the process stability that the material promoted.

Specifically, the hopper chain 110 changes the orientation of the opening of the hopper 111 and completes the discharge after passing around the drive sprocket 102 by the end of the lifting section 120; a first direction-changing chain wheel 1051 is arranged between the driving chain wheel 102 and the head end of the material taking section 150; the hopper chain 110 forms a first drop section 130 between the drive sprocket 102 and the first direction changing sprocket 1051, and forms a second drop section 140 between the first direction changing sprocket 1051 and a head end of the take-out section 150; the second descending section 140 is disposed at an angle to the first descending section 130.

Preferably, a first direction changing sprocket 1051 is arranged between the driving sprocket 102 and the head end of the material taking section 150, so that the hopper chain 110 forms a first descending section 130 and a second descending section 140, and the second descending section 140 is arranged at an angle with the first descending section 130, so that the hopper chain 110 is integrally configured into a roughly herringbone shape, that is, in the upper part of the material taking device, the hopper lifted by the load is closer to the hopper lowered by the idle load, so that the upper structure of the material taking device is smaller, in the lower part of the material taking device, after being changed to the direction by the first direction changing sprocket 1051, the lifting hopper and the descending hopper are far away from each other, and the descending hopper is bent at an angle, so that the lower part of the material taking device forms a triangle-like shape, and the material taking section 150 is conveniently arranged.

Preferably, through adopting chevron shape extracting device, what take is that power effect ratio is higher hopper mouth knife edge positive feeding's mode, in the bottom of chevron structure, in order to let the arm of getting can dig the material of getting hatch coaming below, extracting device bottom sets up the material section 150 of getting of enough length for the hopper can dig the material at high speed in the ship width direction, and efficiency improves greatly.

Traditional L type extracting head sweeps through controlling, realizes that the material gets into the hopper, but the extracting device of dark narrow type is difficult for unloading totally when unloading, and the mode of this kind of gyration feeding must adopt L type extracting device moreover to the hopper of the dark narrow type of collocation, thereby realize the feeding of gyration heap extrusion. The extracting device that this embodiment provided adopts chevron shape structure's front to get the stub bar, compares with traditional chain bucket ship unloaders, and the structure is simpler, and the atress of whole extracting device bottom is more even simultaneously, and the cost is also lower.

Specifically, a second direction-changing sprocket 1052 is disposed between the driving sprocket 102 and the first direction-changing sprocket 1051, and the hopper chain 110 forms a discharge section 160 between the driving sprocket 102 and the second direction-changing sprocket 1052.

Preferably, a material collecting device such as a funnel can be arranged at a position relatively below the discharging section 160, so as to facilitate the subsequent transfer of the materials. The interference of the unloaded hopper moving downwards to the full-load hopper needing to be unloaded can be reduced by arranging the unloading section 160, and the efficient operation of the unloading action is ensured.

Preferably, a dust-proof cover 107 is provided outside the hopper chain 110 to prevent dust. The hopper is exposed only in the lower portion of the take-off device.

Because the gyration feeding mode that traditional chain bucket ship unloaders used, the chain bucket needs to choose for use dark narrow type hopper just conveniently to dig and gets, and dark narrow type chain bucket is difficult for unloading totally when unloading. And the hopper of this embodiment is owing to adopt the mode of front feeding, can set up the hopper into the hopper of wide shallow form, makes things convenient for the material to get into and pour out.

Hopper chain 110 is formed by connecting hopper 111 and connecting plate 112 in turn, and the both ends of hopper 111 are provided with otic placode 114, are provided with the shaft hole on the connecting plate 112 equally, and the otic placode 114 is articulated with connecting plate 112 through the round pin axle to link together all hoppers, constitute hopper chain.

The material taking device of the traditional chain bucket ship unloader adopts chain transmission, the material taking chain bucket is arranged between two chains, and the driving device drives the chains to drive the chain bucket to move. The transmission mode has higher requirements on the performance of the chain, and the chain is easy to damage and needs to be replaced periodically, so that the maintenance cost is higher.

Preferably, in the material taking device provided by this embodiment, the hopper back plate 113 of the hopper 111 can directly participate in transmission, the traditional chain transmission is eliminated, and the connecting plate and the hopper back plate are used for transmission, so that the connecting plate is used to connect the hoppers together, and the hoppers become a part of transmission. The hopper is a working mechanism for digging materials and is used as a part of a hopper chain to participate in transmission, so that the stress area is increased, and the reliability is improved.

Preferably, the drive sprocket and the direction changing sprocket act on a connecting plate, the connecting plate is connected with a pin shaft on the back plate, and the connecting plate is arranged outside the hopper, so that the connecting plate cannot interfere with the hopper during driving and direction changing. The connecting plate is made of high-strength materials, so that the reliability in driving and direction changing is guaranteed.

The portal ship unloader provided by the embodiment further comprises a running trolley 13, a lifting floating device 300, a rotating shaft 103 and a swing mechanism 200. The travelling trolley 13 is adapted to move relative to the boom 601 for movement in the width direction of the vessel.

The lifting floating device 300 is arranged on the running trolley 13, the lifting floating device 300 is directly or indirectly hinged with the material taking device 100, the material taking device 100 is suitable for lifting movement along the ship depth direction relative to the lifting floating device 300, and the material taking device 100 is further suitable for swinging along the ship length direction relative to the lifting floating device 300.

The lifting floating device 300 enables the material taking device 100 to lift and move in the ship depth direction and swing in the ship length direction relative to the lifting floating device 300; the material taking device 100 can swing around the rotating shaft 103 along the width direction of the ship by arranging the rotating shaft 103; therefore, the material taking operation has multiple degrees of freedom, the relative position of the material taking device 100 and the main structure of the ship unloader can be automatically adjusted when the surge acts, the impact is prevented from being transmitted to the main structure of the ship unloader, the safety of the whole structure is ensured, meanwhile, the adjusting mode of the ship unloader is increased, and the swing angle and/or the lifting height of the material taking device 100 can be conveniently adjusted adaptively according to needs.

The running trolley 13 is suitable for translating relative to the arm support 601; and the running direction of the running trolley 13 is parallel to the revolving plane of the material taking device 100 around the revolving shaft 103. The arm support 601 is provided with the material taking device 100, and the arm support 601 can drive the material taking device 100 to move above the cabin 20 so as to unload the material 30 in the cabin 20.

The gate seat type ship unloader is arranged on a wharf foundation 40, the arm support 601 is connected with the wharf foundation 40 through a gate seat upright post 11, optionally, a rail is arranged on the wharf foundation 40, and the gate seat upright post 11 can move along the rail to drive the arm support 601 to move along the rail.

Preferably, the material taking device 100 only takes materials from the front side in the width direction of the ship in one movement, and main loads borne by the material taking device 100 are all in the plane of the material taking device 100, so that the service life of equipment is prolonged, and the efficiency is improved.

The elevating float device 300 includes: the fixed frame 303 is connected with the running trolley 13, the movable frame 305 is directly or indirectly connected with the material taking device 100, and the movable frame 305 is suitable for moving relative to the fixed frame 303 along the ship depth direction so as to drive the material taking device 100 to move relative to the running trolley 13.

Preferably, the elevating float device 300 includes: the lifting frame assembly comprises a fixed frame 303 and a movable frame 305, the movable frame 305 and the material taking device 100 can be directly or indirectly connected in a connecting mode, and is optional, when the movable frame 305 and the material taking device 100 are indirectly connected through a connecting cross beam 301, further optional, the connecting cross beam 301 is fixedly connected with the movable frame 305, and the connecting cross beam 301 is movably connected with the material taking device 100.

This embodiment is through setting up lift floating installation 300 and including adjustable shelf 305 and the mount 303 that can follow deep direction relative motion of ship, mount 303 and operation dolly 13 fixed connection, adjustable shelf 305 with extracting device 100 fixed connection, the realization is through adjustable shelf 305 for the mount 303 moves and drives extracting device 100 moves for operation dolly 13, thereby realizes extracting device 100's altitude mixture control, compares with the traditional pitch motion that passes through the chain bucket arm and realizes altitude mixture control, and the lift floating installation 300 that this embodiment provided only needs to adjust the lift of adjustable shelf 305 can realize extracting device 100's lift, simple structure, easy and simple to handle, the energy consumption is less, and the regulation precision height can improve extracting device 100 goes up and down in the small circle the regulation precision.

Specifically, the lift truck assembly further comprises: a first driving unit adapted to drive the movable frame 305 to move in a ship depth direction with respect to the fixed frame 303.

Through setting up first drive unit drive the adjustable shelf 305 for the mount 303 moves along the deep direction of ship, has increased the degree of automation of device, is convenient for control and regulation the lift of extracting device 100.

Specifically, the first driving unit further includes: the lifting device comprises a lifting cylinder 307 and a connecting rope 306, wherein one end of the lifting cylinder 307 is fixedly connected with the fixed frame 303, the connecting rope 306 is in sliding contact with the top end of the lifting cylinder 307, one end of the connecting rope 306 is fixedly connected with the movable frame 305, and the other end of the connecting rope 306 bypasses the top end of the lifting cylinder 307 and is fixedly connected with the fixed frame 303;

and the fourth pulley 308 is arranged at the top end of the jacking oil cylinder 307, and the connecting rope 306 is arranged in a sliding groove of the fourth pulley 308.

It should be noted that the connection point of the connection rope 306 and the movable frame 305 is lower than the top end of the jacking cylinder 307, that is, lower than the connection point where the connection rope 306 and the jacking cylinder 307 are in sliding contact; the top end of the jacking oil cylinder 307 refers to one end of the jacking oil cylinder 307 far away from the fixed frame 303; the sliding contact between the connecting rope 306 and the top end of the jacking oil cylinder 307 means that the connecting rope 306 is directly or indirectly lapped on the top end of the jacking oil cylinder 307 and can slide relatively; the jacking cylinder 307 can perform telescopic motion, when the material taking device 100 needs to ascend, the jacking cylinder 307 is ejected upwards, so that the connecting rope 306 is driven to move, the connecting rope 306 and the top end of the jacking cylinder 307 slide relatively, along with the ascending of the top end of the jacking cylinder 307, the connecting point of the connecting rope 306 and the movable frame 305 moves upwards relative to the fixed frame 303, namely the movable frame 305 is driven to ascend, so that the material taking device 100 fixedly connected with the movable frame 305 is driven to ascend, similarly, when the material taking device 100 needs to descend, the jacking cylinder 307 retracts downwards, under the action of the gravity of the movable frame 305 and the material taking device 100, the movable frame 305 and the material taking device 100 descend along the ship depth direction, and meanwhile, due to the supporting force of the jacking cylinder 307 on the connecting rope 306, the movable frame 305 and the material taking device 100 slowly descend along with the descending speed of the jacking cylinder, and the phenomenon that the material taking device 100 rapidly falls cannot occur, wherein the ascending refers to move upwards along the ship depth direction, and the descending refers to move along the ship depth direction.

Optionally, the connecting rope 306 is a steel wire rope.

The gantry bucket ship unloader provided by this embodiment includes a jacking cylinder 307 and a connecting rope 306, and the movable frame 305 is driven to move relative to the fixed frame 303 by the cooperation of the jacking cylinder 307 and the connecting rope 306, and in addition, because the connecting rope 306 has a certain distance from the top end of the jacking cylinder 307 and the connecting rope 306 is made of a flexible material, when the material taking device 100 is subjected to an external jacking force, the movable frame 305 moves upward along with the material taking device 100, the connecting end of the connecting rope 306 and the movable frame 305 rises along with the movable frame 305, and the connecting rope 306 is switched from a tightened state to a loosened state, so that the connecting rope 306 does not drive the fixed frame 303 to move upward, that is, the jacking force applied to the material taking device 100 is not transmitted to the fixed frame 303, thereby avoiding transmitting the jacking force to an external structure and avoiding damage to the external structure caused by rigid connection of the conventional material taking device 100 and the external structure.

Specifically, the first driving unit further includes: the fourth pulley 308 is arranged at the top end of the jacking oil cylinder 307, and the connecting rope 306 is arranged in a sliding groove of the fourth pulley 308.

It should be noted that the fourth pulley 308 is fixedly disposed at the top end of the jacking cylinder 307, and goes up and down along with the lifting of the top end of the jacking cylinder 307, the connecting rope 306 is wound in a chute above the fourth pulley 308, so as to indirectly achieve the sliding contact between the connecting rope 306 and the top end of the jacking cylinder 307, and when the top end of the jacking cylinder 307 goes up or down, the fourth pulley 308 goes up or down along with the connecting rope 306, so as to drive the contact point between the connecting rope 306 and the fourth pulley 308 to go up or down relative to the fixing frame 303.

Specifically, the elevating float device 300 further comprises: a buffer assembly, which is slidably connected to the connecting rope 306 and adapted to provide a tension force to the connecting rope 306. It should be noted that the buffer assembly provides a tension force for the connection rope 306, so as to ensure that the connection rope 306 can be tensioned again after being in a loose state due to the movement of the movable frame 305, ensure that the connection rope 306 cannot be disengaged from the sliding groove of the pulley, and further ensure the reliability of the device.

Specifically, the buffer assembly includes second drive unit and sixth pulley 311, the second drive unit includes damping cylinder 309 and sets up the fifth pulley 310 on damping cylinder 309 top, damping cylinder 309 keeps away from the one end of fifth pulley 310 with mount 303 fixed connection, sixth pulley 311 with mount 303 fixed connection, connect rope 306 and walk around in proper order the below of fifth pulley 310 behind the top of sixth pulley 311 with mount 303 is connected.

It should be noted that the sixth pulley 311 plays a role in changing the direction of the connection rope 306, and the connection rope 306 sequentially passes through the lower portion of the fifth pulley 310 and the upper portion of the sixth pulley 311 and then can be connected with the bottom end of the fixing frame 303, where the bottom end of the fixing frame 303 refers to one end of the fixing frame 303 far away from the movable frame 305.

It should be noted that when the ship fluctuates up and down along with the waves, the bottom of the cabin may collide with the bottom of the material taking device 100, the material taking device 100 receives the jacking force applied by the bottom of the cabin, and the conventional chain bucket arm is rigidly connected with the structure of the ship unloader, so that the jacking force received by the material taking device 100 is transmitted to the structure of the ship unloader, and once the bearing range of the structure is exceeded, the structure of the ship unloader is permanently damaged, so that the conventional chain bucket ship unloader can be used only in ports with small waves or inland river ports, and the use and popularization are limited. When the lifting floating device 300 of this embodiment is applied to a bucket ship unloader, when the material taking device 100 is in a balanced state without being subjected to an external acting force, the force of the damping cylinder 309 of the buffering assembly contracting is balanced with the pulling force provided by the connecting rope 306 to the damping cylinder 309, when the connecting rope 306 is in a slack state due to the upward jacking force applied to the material taking device 100, the upward pulling force applied to the connecting rope 306 by the damping cylinder 309 is reduced, the damping cylinder 309 responds therewith, the damping cylinder 309 contracts, the fifth pulley 310 at the top end of the damping cylinder 309 descends, and thereby the slack connecting rope 306 is tensioned, so that when the jacked material taking device 100 falls again, the connecting rope 306 can pull the material taking device 100 by pulling the movable frame 305, damage to the fixed frame 303 due to the rapid descending of the material taking device 100 is avoided, and simultaneously, when the connecting rope 306 is in a slack state, the jacking cylinder 307 responds to the pressure applied to the connecting rope 306, the jacking cylinder 307 responds, the jacking cylinder 307 lifts the fourth pulley 308, and thereby ensuring that the jacking cylinder 307 can lift the jacking cylinder 306 can lift the lifting rope 306 to lift the supporting force to lift the material taking device 100. Under the action of the buffering assembly and the first driving unit, the connecting rope 306 is switched from a slack state to a tensioned state, the connecting rope 306 presses the fourth pulley 308 at the top end of the jacking cylinder 307 to press the jacking cylinder 307 back to the position of the material taking device 100 before the material taking device 100 moves under the action of the jacking force, and similarly, the damping cylinder 309 is restored to the position of the material taking device 100 before the material taking device 100 moves under the action of the jacking force. The jacking oil cylinder 307 and the damping oil cylinder 309 can both realize telescopic motion along the ship depth direction, the stroke of the jacking oil cylinder 307 is relatively long, the response speed is relatively slow, and the stroke of the damping oil cylinder 309 is relatively short, and the response speed is relatively fast.

The portal chain bucket ship unloader that this embodiment provided, through set up the buffering subassembly with connect rope 306 sliding connection, work as connect rope 306 because extracting device 100 receives ascending jacking force and when being in lax state, the damping cylinder 309 of buffering subassembly responds thereupon, damping cylinder 309 contracts, thereby will relax connect rope 306 tensioning, and then, when rising extracting device 100 falls back once more connect rope 306 pulling force, jacking cylinder 307's holding power and under the effect of buffering subassembly, movable frame 305 with extracting device 100 can slowly fall back, avoid to with the external structure that fixed frame 303 is connected causes impact and damage.

Specifically, the lift bracket assembly further comprises: the intermediate bracket 304 is disposed between the fixed frame 303 and the movable frame 305, and is slidably connected to the fixed frame 303 and the movable frame 305, and the movable frame 305 is adapted to drive the intermediate bracket 304 to move along a ship depth direction.

It should be noted that the intermediate bracket 304, the fixed bracket 303, and the movable bracket 305 can relatively move in the ship depth direction, the movement of the intermediate bracket 304 is realized by being driven by the movement of the movable bracket 305, optionally, a limiting structure is provided between the intermediate bracket 304, the movable bracket 305, and the fixed bracket 303, further optionally, the limiting structure may be a limiting block, and in the upward movement process of the movable bracket 305, when the limiting block on the movable bracket 305 abuts against the limiting block on the intermediate bracket 304, the movable bracket 305 pulls the intermediate bracket 304 to move upward; the fixing frame 303 is also provided with a limiting block to limit the middle bracket 304 not to exceed the contact range with the fixing frame 303, so as to prevent the middle bracket 304 from being separated.

By arranging the lifting frame assembly to further comprise at least one middle support 304 arranged between the fixed frame 303 and the movable frame 305, the lifting range of the lifting frame assembly is increased, and the sizes of the fixed frame 303 and the movable frame 305 in the ship depth direction can be shortened, so that the stability and the reliability of the structure are enhanced.

Specifically, the lifting float device 300 further includes: connecting beam 301, connecting beam 301 along the centre of self length direction with extracting device 100 rotatable coupling, the quantity of lifter subassembly is two sets of, and is two sets of the lifter subassembly set up respectively in connect the both ends of beam 301.

It should be noted that the length direction of the connecting beam 301 is parallel to the length direction of the ship; the two ends of the connecting beam 301 refer to two ends of the connecting beam 301 in the body length direction.

Specifically, the connecting beam 301 is connected to the material taking device 100 in an articulated manner.

It should be noted that, when the lifting floating device 300 is applied to a gantry type chain bucket ship unloader, and when a force of a surge along the length direction of the connecting beam 301 acts on the material taking device 100, the impact of the surge on the material taking device 100 is converted into the rotation of the material taking device 100 around a hinge point 302, so that the force of the surge is prevented from directly acting on the lifting frame assembly, and further the force of the surge is prevented from being transmitted to the structure of the ship unloader connected with the fixing frame 303, thereby protecting the whole structure safety of the chain bucket ship unloader.

The connecting mode of the connecting cross beam 301 and the material taking device 100 is hinged, so that the material taking device 100 rotates around a hinge point 302, when the material taking device 100 receives acting force along the length direction of the connecting cross beam 301, the material taking device 100 rotates around the hinge point 302, and therefore the acting force received by the material taking device 100 is prevented from being directly transmitted to an external structure, and the safety of the whole structure is protected.

The cart propulsion system provided by the embodiment includes a cart body 403; the driving wheel 402 is hinged with the trolley body 403; the flexible track 401 is abutted against the driving wheel 402, and the driving wheel 402 is suitable for moving along a preset direction relative to the flexible track 401 under the driving of a driving unit 404; a guard directly or indirectly abutting against the flexible track 401 and adapted to cut off the power transmission of the drive unit 404 to the drive wheel 402 when the tension of the flexible track 401 is greater than a preset threshold.

It should be noted that, in order to ensure smooth traveling of the driving wheel 402, the flexible track 401 needs to be in a tensioned state, when the trolley body 403 is subjected to an external force, the flexible track 401 is stretched, the tension is increased, and when the tension is greater than a preset threshold, the protection device cuts off power transmission from the driving unit 404 to the driving wheel 402, where the preset threshold is a fixed value set according to performance of the flexible track 401.

Optionally, the flexible track 401 is a chain, the driving wheel 402 is a sprocket, and the trolley propulsion system drives the trolley body 403 to advance along the extending direction of the chain in a manner of matching with the sprocket and the chain.

In the cart propulsion system provided by this embodiment, the driving wheel 402 is driven by the driving unit 404 to advance along the preset direction relative to the flexible track 401, so as to drive the cart body 403 to advance along the preset direction, which is convenient for adjusting the position of the cart body 403; by arranging the protection device, when the tension of the flexible track 401 is greater than a preset threshold value, the power transmission from the driving unit 404 to the driving wheel 402 is cut off, so that the driving unit 404 is prevented from being damaged due to the fact that the driving wheel 402 is difficult to drive under the condition that the tension of the flexible track 401 is too large, and after the power transmission from the driving unit 404 to the driving wheel 402 is cut off, the driving unit 404 is not rigidly connected with the driving wheel 402, so that when the trolley body 403 is subjected to external acting force along the advancing direction or opposite to the advancing direction, the acting force is not transmitted to the driving unit 404, so that the driving unit 404 is protected from being damaged, the failure rate of the trolley is reduced, and the service life of the trolley is prolonged.

Specifically, the trolley propulsion system further comprises: and the pressing wheels 409 and the driving wheels 402 are respectively arranged at two opposite sides of the flexible track 401 and are abutted against the flexible track 401 so as to tension the flexible track 401.

According to the trolley propulsion system provided by the embodiment, the pressing wheels 409 and the driving wheels 402 are arranged on the two opposite sides of the flexible track 401 respectively, and the pressing wheels 409 and the driving wheels 402 on the two opposite sides of the flexible track 401 provide acting forces in different directions for the flexible track 401, so that the flexible track 401 is tensioned, the whole structure is stable and reliable, and the stability of the system is improved.

Specifically, the guard device further comprises: a clutch 405, the clutch 405 having an engaged state engaged with the drive unit 404 and a disengaged state disengaged from the drive unit 404, the clutch 405 being adapted to switch between the engaged state and the disengaged state depending on the amount of force of the flexible rail 401 to which the pinch rollers 409 are subjected.

Optionally, the guard is connected to the pressing wheel 409, that is, the guard indirectly abuts against the flexible track 401, and when the tension of the flexible track 401 is different, the pressing wheel 409 receives different forces from the flexible track 401, so that the engaged state and the disengaged state of the clutch 405 are switched according to the magnitude of the force received by the pressing wheel 409 from the flexible track 401. When the tension of the flexible track 401 is greater than the preset threshold, the acting force of the flexible track 401 on the pinch roller 409 is increased, the clutch 405 is switched to a disengaged state, and the power transmission from the driving unit 404 to the driving wheel 402 is cut off; when the tension of the flexible track 401 is less than or equal to the preset threshold, the acting force of the flexible track 401 on the pressing wheel 409 is small, the clutch 405 is switched to an engaged state, and the driving unit 404 transmits power to the driving wheel 402.

As a deformable embodiment, the guard is not connected to the pinch roller 409 but directly connected to the flexible track 401, and optionally, a sensor is provided on the guard to sense the tension of the flexible track 401, and when the sensor detects that the tension of the flexible track 401 is greater than the preset threshold, the clutch 405 is directly controlled by the controller to be switched to the disengaged state, and the clutch 405 can also be switched between the engaged state and the disengaged state.

According to the trolley propulsion system provided by the embodiment, the clutch 405 is arranged to switch between the engagement state and the disengagement state according to the acting force of the flexible track 401, which is applied to the pressing wheel 409, so that the protection device can switch between not cutting off the transmission of power from the driving unit 404 to the driving wheel 402 and cutting off the transmission of power from the driving unit 404 to the driving wheel 402 according to the tension of the flexible track 401, and the trolley propulsion system is simple in structure, convenient to operate and good in protection effect.

Specifically, the guard device further comprises: the connecting plate 406 is hinged to the trolley body 403, one end of the connecting plate 406 is fixedly connected with the pressing wheel 409, and one end of the connecting plate 406, which is far away from the pressing wheel 409, is fixedly connected with the clutch 405.

Optionally, a connecting plate hinge point 407 is disposed on the trolley body 403, the connecting plate 406 is hinged to the trolley body 403 through the connecting plate hinge point 407, and the connecting plate 406 can rotate around the connecting plate hinge point 407.

Specifically, the pressing wheel 409 is adapted to move upwards when the tension of the flexible track 401 is greater than a preset threshold value, and to move the clutch 405 downwards via the connecting plate 406, so as to disengage the clutch 405 from the driving unit 404;

alternatively, the pressing wheel 409 is adapted to move downwards when the tension of the flexible track 401 is less than or equal to a threshold value, and drives the clutch 405 to move upwards through the connecting plate 406, so that the clutch 405 is engaged with the driving unit 404.

According to the trolley propulsion system provided by the embodiment, the connecting plate 406 is arranged to connect the pressing wheel 409 and the clutch 405, so that the clutch 405 and the pressing wheel 409 move in opposite directions, when the tension of the flexible track 401 is larger than a preset threshold value, the pressing wheel 409 moves upwards to drive the clutch 405 to move downwards, the clutch 405 and the driving unit 404 are separated, the structure is reasonable, the operability is good, and the safety of the system is guaranteed.

Specifically, the guard device further comprises: one end of the tensioning oil cylinder 408 is connected with the trolley body 403, the other end of the tensioning oil cylinder 408 is connected with the pressing wheel 409, and the tensioning oil cylinder 408 is suitable for providing acting force towards the flexible track 401 for the pressing wheel 409 and is suitable for stretching according to the acting force of the flexible track 401, which is applied to the pressing wheel 409.

Optionally, the tensioning cylinder 408 is hinged to the trolley body 403 through a hinge point arranged on the trolley body 403, and the tensioning cylinder 408 can rotate around the hinge point.

According to the trolley propulsion system provided by the embodiment, the tensioning oil cylinder 408 is arranged to provide acting force towards the flexible track 401 for the pressing wheel 409, and the flexible track 401 is stretched according to the reacting force of the flexible track 401 received by the tensioning oil cylinder 408, so that the flexible track 401 is ensured to be in a reasonable tensioning state, and the pressing wheel 409 is moved when the tensioning force of the flexible track 401 is greater than a preset threshold value.

Specifically, an oil cylinder hinge point 411 is arranged on the connecting plate 406, and the tensioning oil cylinder 408 is hinged to the connecting plate 406 through the oil cylinder hinge point 411.

According to the trolley propulsion system provided by the embodiment, the tensioning oil cylinder 408 is hinged with the connecting plate 406 through the oil cylinder hinge point 411 arranged on the connecting plate 406, so that the connecting plate 406 and the tensioning oil cylinder 408 rotate relatively, when the pressing wheel 409 needs to move up and down, the distance between the pressing wheel 409 and the fixed end of the tensioning oil cylinder 408 is adjusted through the relative rotation between the tensioning oil cylinder 408 and the connecting plate 406, and the pressing wheel 409 can move up and down smoothly.

Specifically, the trolley propulsion system further comprises: the trolley wheels 410 are disposed at the bottom end of the trolley body 403 and adapted to provide guidance for the trolley body 403 to travel.

According to the gantry chain bucket ship unloader provided by the embodiment, the position of the trolley body 403 is adjusted by arranging the trolley propulsion system, so that materials at different positions can be loaded and unloaded conveniently; through the protection device of the trolley propulsion system, when the tension of the flexible track 401 is larger than a preset threshold value, the power transmission from the driving unit 404 to the driving wheel 402 is cut off, the phenomenon that the trolley body 403 transmits acting force to the driving unit 404 under the impact action of surge is effectively avoided, the damage of the surge impact action to the trolley is effectively avoided, and the failure rate of the gantry chain bucket ship unloader is reduced.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (10)

1. A gate dock ship unloader, comprising:

the cantilever crane (601) comprises two girders (6011) which are parallel and arranged at intervals and at least one cross beam (6012), and two ends of the cross beam (6012) are fixedly connected with the two girders (6011) respectively;

a door seat upright post (11) positioned between the two main beams (6011);

the material taking device (100) is connected to the arm support (601) and is suitable for digging and taking the materials (30);

the boom lifting system (600) comprises a lifting device and a rolling structure (605), wherein the lifting device is suitable for drawing the boom (601) to move up and down along the door seat upright post (11); one end of the rolling structure (605) is connected to the main beam (6011), and the other end of the rolling structure is in rolling fit with the door seat upright post (11).

2. A gate seat ship unloader according to claim 1, wherein the rolling structure (605) comprises rollers (6051), the rollers (6051) being connected to the girder (6011) and being in rolling engagement with the gate seat post (11).

3. A gate-seat ship unloader according to claim 2, wherein the rolling structure (605) further comprises an elastic damping member (6052), and the roller (6051) is connected with the girder (6011) through the elastic damping member (6052).

4. Portal ship unloader according to claim 2 or 3, wherein at least one of the girders (6011) is provided with two connection seats spaced apart from each other, the door seat post (11) is located between the two connection seats, and at least one of the rolling structures (605) is connected to the girder (6011) and/or the connection seats.

5. Portal ship unloader according to claim 4, wherein the door jamb (11) is provided with a rail (1101) cooperating with the roller (6051), the roller (6051) being adapted to be lifted along the rail (1101).

6. Portal ship unloader according to claim 4, wherein each of the connecting sockets is fitted with at least one locking structure (606), the locking structures (606) being adapted to lock the door seat post (11) from opposite sides of the door seat post (11).

7. Portal ship unloader according to any one of claims 1 to 3 or 5 to 6, wherein the lifting device comprises a traction mechanism (602), a pulley assembly (603) and a transmission member (604); the traction mechanism (602) is arranged on the arm support (601) and is suitable for being respectively connected with the door seat upright post (11) and the arm support (601) through the transmission piece (604) and the pulley assembly (603).

8. A gate-seat ship unloader according to claim 7, wherein the pulley assembly (603) comprises:

at least one pair of first pulleys (6031), wherein each pair of first pulleys (6031) is respectively arranged on two sides of the top of the door seat upright post (11);

at least one pair of second pulleys (6032), wherein each pair of second pulleys (6032) is respectively arranged on the two main beams (6011) and is correspondingly arranged below the first pulleys (6031) in the lifting direction of the arm support (601);

at least one pair of third pulleys (6033) are arranged at two ends of the side part of the door seat upright post (11) and are positioned at corresponding positions below the first pulleys (6031) in the lifting direction of the arm support (601);

the one end of driving medium (604) with the output of drive mechanism (602) is connected, and the other end is walked around in proper order one side of door seat stand (11) first pulley (6031), correspond one side of door seat stand (11) second pulley (6032), two third pulley (6033), correspond the opposite side of door seat stand (11) second pulley (6032) the opposite side of door seat stand (11) behind first pulley (6031) with the input of drive mechanism (602) is connected.

9. The gate seat ship unloader according to claim 8, wherein the first pulleys (6031) have three pairs, the top of the gate seat upright post (11) on the side close to the traction mechanism (602) is provided with two pairs of the first pulleys (6031), and the top of the gate seat upright post (11) on the side far from the traction mechanism (602) is provided with one pair of the first pulleys (6031);

the second pulleys (6032) are provided with two pairs and distributed along the length direction of the main beam (6011);

the third pulley (6033) is provided with a pair and is arranged on the side of the door seat upright post (11) far away from the traction mechanism (602);

the one end of driving medium (604) with the output of drive mechanism (602) is connected, and the other end is walked around in proper order and is located one side of gate seat stand (11) and be close to one of drive mechanism (602) first pulley (6031), correspond second pulley (6032), be located one side of gate seat stand (11) and be close to another of drive mechanism (602) first pulley (6031), be located one side of gate seat stand (11) and keep away from drive mechanism (602) first pulley (6031), correspond second pulley (6032), two third pulley (6033), be located the opposite side of gate seat stand (11) and keep away from drive mechanism (602) first pulley (6031) correspond second pulley (6032), be located the opposite side of gate seat stand (11) and keep away from drive mechanism (602) first pulley (6031), be located the opposite side of gate seat stand (11) and be close to one of drive mechanism (602) first pulley (6031), be located the second pulley (6032) correspond first pulley (6031) the gate seat stand (6031) and be located the second pulley (6031) and be close to another drive mechanism (602) first pulley (6031) the input end drive mechanism (6031) and be close to another the second pulley (6032) and the input of gate seat stand (6031) and the drive mechanism (6031) second pulley (6031) and be located the input end on the second pulley (6031) and the drive mechanism (6031) the input end drive mechanism (6031) the second pulley (6031) and be close to the second pulley (6032) the second pulley (6031) the input end on the back pulley (6031) the connection mechanism (6031) the second pulley (60mechanism.

10. Gate seat ship unloader according to claim 8 or 9, wherein the third pulley (6033) is arranged close to the top of the gate seat post (11).

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